Individually Owned: 150,657
Corporate Owned: 137,281
Cable Airport
Aircraft Accident/Incident Report
Upland, California 91786
Sunday, October 8, 2006 13:12 PDT
NTSB Narrative Summary Released at Completion of Accident
The helicopter's engine suddenly lost power during initial climb on an instructional flight. The certified flight instructor (CFI) took the controls and autorotated to a hard touchdown in a gravel pit. After securing the helicopter, the CFI inspected the throttle linkage. He reported that something appeared disconnected behind the firewall. "When rotating the throttle from full open to full close, the push/pull tube that connects to the carburetor does not move." The subsequent examination of the helicopter's throttle spring assembly revealed that on a previous occasion improper maintenance had been performed. The helicopter's maintenance records did not reflect maintenance in this area. The inspection revealed that the upper rod end bearing was disconnected from the lower portion of the rod because it had not been safety wired as required. This maintenance error resulted in a total loss of throttle control.
NTSB Probable Cause Narrative
Disconnection of the throttle control linkage due to improper maintenance, which resulted in a loss of engine power during initial climb.
Event Information
| Type of Event | Accident |
| Event Date | 10/8/2006 |
| Event Day of the Week | Sunday |
| Time of Event | 1312 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Upland |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 91786 |
| Event Date Year | 2006 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 340642N |
| Event Location Longitude | 1174114W |
| Event Location Airport | Cable |
| Event Location Nearest Airport ID | CCB |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 1444 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1247 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 242 |
| Weather Observation Facility ID | POC |
| Elevation of weather observation facility | 1011 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 15000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 5 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 250 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.95 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 23137 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Oct 8 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Mar 31 2008 11:52AM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Riverside, CA |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N821SH |
| NTSB Number | LAX07LA005 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Robinson |
| Aircraft Model | R22 Beta |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 3774 |
| Certified Max Gross Weight | 1370 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Oct 1 2006 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1809 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Silver State Helicopters, LLC |
| Aircraft Owner Street Address | 500 E. Cheyenne Ave. |
| Aircraft Owner City | North Las Vegas |
| Aircraft Owner State | NV |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 89030 |
| Operator is an individual? | No |
| Operator Name | Silver State Helicopters, LLC |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | CCB |
| Departure City | Upland |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1230 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | POC |
| Destination City | La Verne |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | Landing - flare/touchdown |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 20 2008 5:43PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 24 |
| Runway Length | 3864 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |